. >>> phoenix now, that's where a psychologist returns to the hot seat, this is the jodi arias trial, of course, the murder trial. psychologist richard samuels, he is a key defense witness. now, he claims that arias suffers from post traumatic stress disorder, and can't remember details about killing her ex-boyfriend. samuels, he has been grilled by prosecutors and today the judge read him questions now from the jurors. >> can you be sure jodi is not lying to you about the events on june 4, 2008? >> not with 100% certainty, i can't say that. however, when you look at the repeated stories, several different times, asked the same question, the story was not 100% the same, but the basic aspects of the story was sufficient. >> arizona, it is just one of the few states where jurors have the legal right to question the witnesses. >>> and the search now for a missing brown university student is expanding. he has not been seen now for ten days. police in providence, rhode island, they say they are no closer to finding him. his wallet, i.d., credit cards, cell phone, all found in his room. pos